Compass ballpoint pen

ABSTRACT

A compass ballpoint pen combination comprising a case having curved surfaces and defining an asymmetric compartment for receiving therein a ballpoint pen cartridge. The case forms a longitudinal depression following the curved surfaces and opening towards the outside. A compass point arm is pivotally housed and received in the depression.

United States Patent 1191 Gimenez Mar. 19, 1974 [54] COMPASS BALLPOINTPEN 2,573,760 11/1951 Cherne 33/27 B [76] Inventor: Fernando SanzGimenez, Juan de FOREIGN PATENTS OR APPLICATIONS Urbleta Madfld, Spam1,264,537 5/1961 France 33/27 B g 2, 424,004 8/1947 Italy 33/27 8 [211App]' 277385 Primary Examiner-Harry N. Haroian [52] US. Cl. 33/27 B 57 BT T [51] Int. Cl B43l 9/02 [58] Field of Search 33/27 B 152 A compassballpoint pen combinatlon comprising a case having curved surfaces anddefining an asymmet- [56] References Cited 'ric compartment forreceiving therein a ballpoint pen cartridge. The case forms alongitudinal depression UNITED STATES PATENTS following the curvedsurfaces and o enin towards the P 8 2/ 25 (310581 H; B outside. Acompass point arm is pivotally housed and ,2 l l 87 Boman 33/15 R d th d1,950,819 3/1934 Scherer 33/152 C recelve m e epresslon 3,550,282l2/l970 Tsunemi 33/27 B 3 Claims, 3 Drawing Figures 10 l n v I l 9 I, II I I 0 i I q I I I N 6 5 I 1 -L/ I n I I i I I 3 l 1 5 I I l I I I I 71 '7" i I 1,,

PATENTEDMR 19 1914 3791.1 17

FIG.

COMPASS BALLPOINT PEN The present invention relates to a tool formed bya body enclosing a ballpoint pen to which, is affixed, a rod which actsas a point of a compass, and which makes it possible, by using thewriting point of the pen, to draw circumferences of predetermineddiameters.

Such a tool as expected cannot be a tool of exacting precision, butrather it is a practical tool, which allows the use of the ballpoint penin all usual ways and, furthermore when one needs to make drawings,diagrams, etc. permits the use of compass in order to make use of itsspecial features.

It is one object of the present invention, to provide a compassballpoint pen combination, wherein the cost of manufacturing of thecombination is very low, with the simple use of plastic material ofpractically no cost, comprising an inner compartment, offset somewhatwith respect to the axis of the case, and receiving therein a flexibleballpoint pen cartridge.

Following the curved surfaces of the case, on the outside, a verticaldepression is formed with a sufficient cross-section to allow same toreceive therein a pivotal compass point arm which, when folded down,fits completely into the outer surface of the case in the depression.

It is another object of the present invention, to provide a compassballpoint pen combination, wherein the upper end of the compass pointarm widens and is pivotally mounted on, and attached to a bolt ortransversal pin provided on the head of the case, and which,furthermore, has two parallel grooves, which make it possible toarticulate the point in order to set the openings and determine theradius of the circumference to be drawn.

It is still another object of the present invention, to provide a parton the upper end of the case, which part protrudes over the bolt and iscylindrical and striated in order to facilitate the handling of thetool, when it is used as a compass.

With these and other objects in view, which will become apparent in thefollowing detailed description, the present invention will be clearlyunderstood in connection with the accompanying drawings, in which:

FIG. 1 is an axial section of the entire unit; the compass point beingshown in dotted lines in an extended position;

FIG. 2 is a front elevational view of the ballpoint pen with the compasspoint arm folded back; and

FIG. 3 is a top plan view of the ballpoint pen, shown in FIG. 2.

Referring now to the drawing, the compass ballpoint pen combinationcomprises a case, made of preferably plastic material, on the inside ofwhich there is a formed a compartment 2, which houses a flexible andreplaceable cartridge 4 of the ballpoint pen, the latter ending in awriting point 5.

Vertically extendingand following the curved surfaces of the case 1,there is formed a vertical depression 3 which houses a compass point arm6 which, when its needle 8 is retracted, fits complementarily into thedepression 3. In order to adjust the needle 8, a small grooved wheel 7is provided. The depression is formed with a circular widening just atthe height of a wheel 7 and complementary to its periphery 3a, so thatit will fit in.

2 On the upper end of the arm 6, a flap 9 is pivotally mounted on atransverse pin 10 in a direction opposite to a couple of verticalgrooves 11, which are diametrically opposed and which make possible thefree articulation of the flap 9 on the pin 10.

A jointed clamp 13 is provided over the pin 10 and astride the flap 9,on which clamp 13, a pommel 12 is screwed, in order to improve theeffectiveness of the compass.

When the arm of the compass is folded downwardly, one may make normaluse of the ballpoint pen, since the diameter of the case 1, is slightlyenlarged, but still falls within usual norms, and which permits theperfect use of the writing tool which, when the arm 6 is extended andset on a point with an appropriate radius for the opening, the pen willserve as the tracing end of a compass.

While I have disclosed one embodiment of the present invention, it is tobe understood, that this embodiment is given by example only, and not ina limiting sense.

I claim:

1. A compass ballpoint pen comprising a case having curved surfaces anddefining an axially offset peripherally closed asymmetric compartment,

a ballpoint pen cartridge disposed in said compartment and having a penpoint extending at one end through said case,

said case forming a vertical extending depression following said curvedsurfaces and opening towards the outside,

a compass point arm having a compass point adjacent said one end andbeing pivotally mounted to the other end of said case at its end remotefrom said compass point in said depression,

said asymmetric compartment being narrowest adjacent said other end ofsaid case and widest adjacent said one end,

said depression being widest adjacent said other end of said case andnarrowest adjacentsaid one end, such that said compartment and saiddepression complementarily define a cylindrical shape throughout thelength of said case extending from the narrowest portion of saidcompartment to the widest portion thereof, said opening of saiddepression extending substantially less than of said cylindrical shape,

said ballpoint pen cartridge extending in said compartmentasymmetrically relative to an axial center line of said cylindricalshape,

said compass point arm being thicker at said end remote from saidcompass point, and

a transverse pin mounted to said case passing through said axial centerline and thereat pivotally mounting said compass point arm.

2. The compass ballpoint pen, as set forth in claim 1,

wherein said compass point arm is completely housed in said depressionin the retracted position of said needle,

said depression has a circularly widened portion, and

a grooved wheel means for adjusting the extent of said compass point onsaid arm and said means received by said circularly widened portion andfits substantially flush with said cylindrical shape of said case.

3. The compass ballpoint pen, as set forth in claim 2,

wherein said case having notches to facilitate the pivoting of said arm,and

a grooved cylindrical pommel means for easing the tracing.

1. A compass ballpoint pen comprising a case having curved surfaces anddefining an axially offset peripherally closed asymmetric compartment, aballpoint pen cartridge disposed in said compartment and having a penpoint extending at one end through said case, said case forming avertical extending depression following said curved surfaces and openingtowards the outside, a compass point arm having a compass point adjacentsaid one end and being pivotally mounted to the other end of said caseat its end remote from said compass point in said depression, saidasymmetric compartment being narrowest adjacent said other end of saidcase and widest adjacent said one end, said depression being widestadjacent said other end of said case and narrowest adjacent said oneend, such that said compartment and said depression complementarilydefine a cylindrical shape throughout the length of said case extendingfrom the narrowest portion of said compartment to the widest portionthereof, said opening of said depression extending substantially lessthan 90* of said cylindrical shape, said ballpoint pen cartridgeextending in said compartment asymmetrically relative to an axial centerline of said cylindrical shape, said compass point arm being thicker atsaid end remote from said compass point, and a transverse pin mounted tosaid case passing through said axial center line and thereat pivotallymounting said compass point arm.
 2. The compass ballpoint pen, as setforth in claim 1, wherein said compass point arm is completely housed insaid depression in the retracted position of said needle, saiddepression has a circularly widened portion, and a grooved wheel meansfor adjusting the extent of said compass point on said arm and saidmeans received by said circularly widened portion and fits substantiallyflush with said cylindrical shape of said case.
 3. The compass ballpointpen, as set forth in claim 2, wherein said case having notches tofacilitate the pivoting of said arm, and a grooved cylindrical pommelmeans for easing the tracing.